The Sixth Doctor and Melanie Bush once hired a green convertible Volkswagen Beetle from Bertie's Rent-A-Bug in Australia. Some time later Mel was surprised to find that, instead of returning the car as he'd promised, the Doctor had kept it aboard his TARDIS. Furthermore, he had replaced the car's collapsible roof with one the same colours as his trousers and added a green sunstrip across the windscreen which read "The Doc" on the driver's side and "Companion of the Moment" on the passenger's side. Mel chided the Doctor for his dishonesty and talked him into at least repaying Bertie's for the cost of the car (although it is unclear if he ever did, as they were subsequently distracted by a reunion with Evelyn Smythe and a confrontation with John Doe and the Cylox